Burner for incandescent lighting.



PATBNTED'JULY 21, 1903.

- R. DANVIN. I BURNER FOR INGANDESGENT LIGHTING,

APPLICATION FILED DBO. 10, 1902.

. N0 MODEL.

m: uonms PEYERS co vHcm-uma, WASHINGTON. o. c.

' UNITED STATES Patented July 21, 1903.

ROGER D ANVIN, OF COURBEVOIE, FRANCE.

BURNER FOR INCANDESCENT LIGHTING.

SPECIFICATION forming part of Letters Patent No. 734,308, dated July 21, I903. Application filed December 10, 1902. Serial No. 134,692. (No model.)

To all whom it may concern.-

Be it known that I, ROGER DANVIN, a citizen of the French Republic, residing at Courbevoie, Seine, France, have invented certain new and useful Improvements in Burners for IncandescentLighting, of which the following is a description, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The present invention has for its object a burner for incandescent lighting having the burner-tube formed as a double cone which ejects the gas in the same manner as a steamejector operates. In the upper part of the said tube is loosely arranged a core with rounded under face having metal strips arranged in a star-like form on its surface. These metal strips form small channels in the upper part of the burner-tube, which serve as outflow for the gas, whereby the gas is directed to the place of combustion in small streams.

The invention will be fully understood by reference to the accompanying drawings, in which-- Figure 1 is a vertical section through a complete burner. Fig. 2 is a plan view of the same. Fig. 3 is a vertical section through the top part of a slightly-modified form of construction, while Fig. 4. is a plan view thereof. r

Above the gas-outflowfis arranged a burnertube at, having the form oftwo superposed truncated cones the narrow parts of which are together. The burner-tube is provided with the usual lateral openings 6 for the admission of air. The upper part of the tube a either terminates in a cylindrical part b, Fig.

1, or is conically prolongated, as shown in Fig. 3. Into this upper part is inserted a core 0, having a semicircular under surface g and metal strips d arranged over its whole side surfaces, the said metal strips fitting exactly either in the part b, Fig. 1, or in the prolongated conical part a, Fig. 3. These metal strips d may be given any desired direction, Figs. 2 and 4:, for their purpose is to provide small channels between the core and the outer tube, such that the gas stream,owing to the particular form of the tube a,is rapidly ejected and is finely distributed and directed in small streams to the place of combustion by the core 0 and. the small channels formed by the metal strips d.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is In an incandescent burner, the use of a burner-tube having the form of two truncated cones superposed with their narrow parts together, giving the action of an ejector, and of a core with semicircular under surface mounted within the upper part of the said burner -tube and carrying star-like metal strips which'form small channels between the core and the tube for the purpose of breaking up and directing the streams of gas, substantially as and for the purpose described.

In testimony whereof 'I affix my signature in presence of two witnesses.

ROGER DANVIN.

Witnesses:

EDWARD P. MACLEAN, ALBERT T. OTTO 

